The Dell Latitude E6330 laptop features a 6-cell, 60 Wh Li-ion battery that provides up to 4 to 6 hours of battery life on a single charge, depending on usage, configuration, and age of the battery. The laptop also supports Dell ExpressCharge technology, which allows the battery to charge up to 80% in just one hour when the laptop is turned off or in sleep mode. Additionally, there are compatible extended battery options available for purchase if needed. While the battery life is not as long as some newer laptops, the Dell Latitude E6330 offers reliable performance and quick charging options for professionals on-the-go.